Zero-VOC radiation curable/moisture curing resin and preparation method thereof

A radiation curing and moisture curing technology, applied in the field of coatings, can solve problems such as inability to prepare coatings, and achieve the effects of widening the scope of use, low preparation costs, and simple and easy preparation methods.

Active Publication Date: 2019-06-07
JIANGMEN PAINT FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of resin has a viscosity range of 50000-8000cP and contains solvents, so it is impossible to prepare zero-VOC coatings

Method used

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  • Zero-VOC radiation curable/moisture curing resin and preparation method thereof
  • Zero-VOC radiation curable/moisture curing resin and preparation method thereof
  • Zero-VOC radiation curable/moisture curing resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A zero-VOC radiation-curable / moisture-curable resin, comprising the following raw materials in parts by weight:

[0061]

[0062]

[0063] The preparation method of zero-VOC radiation-curable / moisture-curable resin comprises the following steps:

[0064] 1) Add polyhydric alcohols, polyacids and their derivatives into a reaction kettle with mechanical stirring, nitrogen flow, and rectification column, raise the temperature to 190 ° C, keep it warm for 1 hour, then add monobasic acid dropwise, and continue to press 10 degrees / The temperature was raised to 220°C at a rate of 1 hour, and the temperature was kept for 5 hours to obtain a branched polyester;

[0065] 2) The branched polyester obtained in step 1) is transferred to a reactor with ventilating and condensing reflux devices, wherein the water separator has been filled with toluene, and the carboxyl-containing olefin and the first catalyst are added, and the temperature is raised to 90 ℃, put in the air to...

Embodiment 2

[0069] A zero-VOC radiation-curable / moisture-curable resin, comprising the following raw materials in parts by weight:

[0070]

[0071]

[0072] The preparation method of zero-VOC radiation-curable / moisture-curable resin comprises the following steps:

[0073] 1) Add polyhydric alcohols, polybasic acids and their derivatives into a reaction kettle with mechanical stirring, nitrogen flow, and rectification column, raise the temperature to 150°C, keep it warm for 2 hours, then add monobasic acid dropwise, and continue to press 10 degrees / The temperature is raised to 200°C at a rate of 1 hour, and the temperature is kept for 5 hours to obtain a branched polyester;

[0074] 2) The branched polyester obtained in step 1) is transferred to a reactor with ventilating and condensing reflux devices, wherein the water separator has been filled with toluene, and the carboxyl-containing olefin and the first catalyst are added, and the temperature is raised to 110 ℃, put in the air...

Embodiment 3

[0078] A zero-VOC radiation-curable / moisture-curable resin, comprising the following raw materials in parts by weight:

[0079]

[0080]

[0081] The preparation method of zero-VOC radiation-curable / moisture-curable resin comprises the following steps:

[0082] 1) Add polyhydric alcohols, polyacids and their derivatives into a reaction kettle with mechanical stirring, nitrogen flow, and rectification column, raise the temperature to 160°C, keep warm for 2 hours, then add monobasic acid dropwise, and continue to press 10°C / The temperature was raised to 190°C at a rate of 1 hour, and the temperature was kept for 6 hours to obtain a branched polyester;

[0083] 2) The branched polyester obtained in step 1) is transferred to a reactor with ventilating and condensing reflux devices, wherein the water separator has been filled with toluene, and the carboxyl-containing olefin and the first catalyst are added, and the temperature is raised to 110 ℃, put in the air to reflux, w...

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Abstract

The invention discloses zero-VOC radiation curable / moisture curing resin and a preparation method thereof. The zero-VOC radiation curable / moisture curing resin comprises the following raw materials, in parts by weight: 15-25 parts of a polyol, 18-24 parts of a polyacid and a derivative of the polyacid, 30-40 parts of a monoacid, 4-7 parts of a carboxyl-containing olefin, 0.3-1 part of epoxy resin,10-20 parts of isocyanate, 0.1-0.5 part of a first catalyst, 0.1-0.3 part of a polymerization inhibitor, 0.01-0.1 part of a second catalyst, and 0.005-0.015 part of a third catalyst. The product provided by the invention has low viscosity, strong adhesion, no solvent and no volatile organic compound emission, and is green and environmentally friendly; and the preparation method is simple and easyto implement, the preparation costs are low, no three wastes (waste water, waste gas and solid waste) are generated in the synthetic process, and the industrialized production is easy to realize.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a zero-VOC radiation-curable / moisture-curable resin and a preparation method thereof. Background technique [0002] The structural formula for radiation curable / moisture curable resins is: [0003] [0004] Among them, x represents the number of NCO groups, and the average resin will contain 2-4. Y represents the number of radiation-curable groups, and the average resin contains 2-3 groups. R denotes a similarly hyperbranched polyester. This type of resin is used to provide surface dryness of the surface coating due to the rapid radiation curable group, and the electrical performance of the surface coating due to the moisture curable NCO group. Due to the special properties of this type of resin, it can be widely used in the surface protective coating of electronic circuit boards. [0005] The core electronic components and circuits in electronic products are sensitive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/68C08G18/76C08G63/20C08G63/91C08G18/30C09D175/14
Inventor 丁国静
Owner JIANGMEN PAINT FACTORY
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